Carburetor



J. GCDDYN June 4, 1929.

CARBURETOR Filed Jan. 2, 1926 outlet passage thereof; the inventionbeing Patented J une 4, 1929.

JOHANNESGODDYEOE HAARLEMMERMEER, NETHERLANDS.' y

CARBURETOR.

Applicationnied Januarya, i926, sei-iai No. 78,857, and intheNetheriandssep'tember 2li,v i925'.

This invention relates to improvements in carburetors, and moreparticularly in the fuel primarily designed for application to the typeof carburetor shown in my prior French Patent No. 582,736, grantedOctober 20, 1924.

According to the patented construction, the

throttle and fuel valves are connected toygether for movement in unison,and the former is therein represented as of thedrum type. The fuel inletpassage is disposed axially ofthe throttle valve, and the openings andthe dimensions of the closing parts of said valve are so arranged thatthe passage for .the mixture is open in the initial position of thevalve and is greater than the inlet opening 1 for the air; thedifference between the sizes of these passages decreasing uniformly themore the valve is opened until by the time the valve is wide open thepassages are equal in size.

The disadvantage of this type of carburetor is that when the air supplypassage and the passage for carrying off the mixture have to beVdisposed in alinement, whichV is frequently the case, .so that outlet ofthe mixture passage lies directly opposite t-he air supply passage, lthecurrent of air interferes with the v flow of the fuel from the fuelpassage or nozl embodiment;

zle and the motor cannot attain its maximum number of revolutions.

According to the present invention, this ob jection is overcome bycovering the outlet of the fuel passage .by a plate in such a waythatgaps are left at both sides of the plate, while the two perforated endsof the plate are bent or curved lso `as to form projections that extendinto the mixing chamber.

v An embodiment of the invention is illustrated in the accompanying vdrawing, wherein: y

Figure 1 is a vertical sectional view of such Figs. 2 and 3 are verticaland horizontal sections, respectively, taken on lines Il-II and III-IIIof Fig. 1;

-Fig. 4 is alvertical section at right angles to the plane of section ofFig. 1. i

As shown insaid drawing, the carburetor is provided with an air inletpassage 1 and an outlet passage 2 for the mixture, which pasf sages arein line with each other. The fuel inlet passage 3 opens into a pocket 4which itself opens into the mixing chamber 5; such pocket 4 beinglocated directly opposite the air inlet passage 1 and having a narrowkrectangular or slot-like outline as represented in dottediineS-inlrig.a frhami'xnglhamber 5 is provided by tlieinterior of the hollow throttlevalve 55, which latter is mounted to c rotate within the casing 56 ofthecarburetor l This valvejinclude's u a hollow hub portion 57,whichfitsover a l Y about alhorizontal axis.

horizontal, hollow shaft 58 that is disposed centrally ofthe casing, andsaid shaft, in turn,

encloses thev'fuel passage 8. v i

The outlet pocketl 4 underlies a cover plate 7 that project into vthemixing chamber 5; and this plate is provided with a plurality of vsmallaperturesl 8 vwhich enable leakage there- 'l Y UjNiTE sra s i A-rNrerr-ict;-

6, the two ends of which are so bent or curved A as to form lconvextransverse ridges or ribs cuts off communication ybetween that portionof the ,mixing chamber whereinto the pocket opens and the rest ofsaidchamber: on the contrary, the arrangement and dimensions of theplate andpocket are such that at each Y end of the latter narrow slot-like gaps10Y are left` uncovered, and it is through these gaps that the fuelVescapes into chamber5 for admixture with the air.

The operation is substantially as follows :Y

Air entersthechamber 5 through the 'inlet' y l and lowsi'n bothldirectionsaround the plate 6, beingv deflected to some extent by theprojecting ribs 7 on the p'laterso that itis guided past the gaps 10. Asit' passes these leaving the carburetor through the outlet 2, I claim asmy invention 1Q In 'a carburetor, a cylindrical, casingv having an airinlet and an" outlet for theA mixture located opposite each other,ahollow gaps, the air current necessarily exerts some 'same direction asthe original airA current and l valve rotatable within` said casing tocon-f trol said inlet and outlet and providing an internal mixingchamber adapted to com- 1y municate with the same, said *valvev having ahollow, horizontal hubportion which is clisposed axially ofsaid casing,av fuel supply l i Y .passage enclosed by said hule and terminat-- ingin a narrow, slot-like outlet pocket opening into the mixing chamberdirectly oppo-` site the air inlet, vand a coverfplate in saidl kchamberimmediately overlying said pocket l but terminating at its ends short ofthe correspending ends of the pocket so as to leave narrow outlet'gapsfor the fuel; said rplate Vhaving its opposite ends provided with con-Vex,v transversely arranged ribs which pro# ject intothe path ofthe'aircurrent in the :flow through said gaps into'thev air Current.

mixingv chamber so as to guidefthe air past" such gaps and thusincreasethe suction be hind the plate, whereby the `fuel is caused to Intestimony whereof I affix my signature. f Y i Jonnunns GQDDXN,

